ichigo/engine/billboard.go

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package engine
import (
"encoding/gob"
"image"
"github.com/hajimehoshi/ebiten/v2"
)
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// Ensure Billboard satisfies interfaces.
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var _ interface {
Identifier
Drawer
ParallaxScaler
Scanner
} = &Billboard{}
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func init() {
gob.Register(&Billboard{})
}
// Billboard draws an image at a position.
type Billboard struct {
ID
Hidden
Parallax
Pos image.Point
Src ImageRef
ZOrder
}
// Draw draws the image.
func (b *Billboard) Draw(screen *ebiten.Image, opts ebiten.DrawImageOptions) {
if b.Hidden {
return
}
var geom ebiten.GeoM
geom.Translate(float64(b.Pos.X), float64(b.Pos.Y))
geom.Concat(opts.GeoM)
opts.GeoM = geom
screen.DrawImage(b.Src.Image(), &opts)
}
// Scan returns a slice containing Src.
func (b *Billboard) Scan() []interface{} { return []interface{}{&b.Src} }